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good knight [bro's 500 — san]

[fake relationship/forbidden love, smut, royal!au, knight!san/princess!reader]

requested by: @k-hotchoisan + 🍪

word count: 4.7k

content: smut, a lot of sexual tension... like a lot a lot, UNPROTECTED SEX (PLS WRAP UP IRL), slight breeding kink, completely consensual!

author's note: both aubs and cookie anon had really similar ideas so i decided to combine them! also, i went way too hard w this piece... it's supposed to be a drabble idk what happened 😭 the things i do for san ig ¯\_(ツ)_/¯

“San, you have to help me. Please,” you begged the knight.

You were standing with him in the Great Hall, not a single other soul around you. The knights had returned from their daily rounds, and San was getting ready to head back to his quarters when you stopped him. He was the only one in the entire castle that you could trust to help you with your vision, and you hoped that if you begged enough, he would follow through and help you out.

“Princess, what you’re asking of me is too much of an encumber. There’s no way I could fulfill such a thing,” San said quietly.

“San, you’re the only one who can do this for me. You need to do it.”

“What about—”

“I’ve already considered all of the other possibilities!” you interrupted him. “I thought everything through, and the only thing I can think of is for you to take me to this stupid ball and present yourself as my lover. Please, please, please San!”

“Your highness,” San sighed softly. “I can only do so much.”

“San, please… I don’t know what else to do, and if I tell my father that I don’t want to marry the prince, then he’ll never let me step foot outside of the castle until the day of the wedding. Plus! Plus, he trusts you so much, and I don’t know who else he would listen to that would also be able to help me, and I just—”

You covered your mouth when you felt tears well up in your eyes, stifling a sob. San immediately reacted by cupping your face and drying the tears from the corners of your eyes with the pads of his thumbs.

“Princess, don’t cry,” San said, his lips nearly pulling into a painful frown. “I’ll… I’ll talk to the king, okay?”

You nodded and mouthed a small thank you to the man before he turned on his heel to go talk to the king.

“I really don’t see the need for you to go, San,” the king said gruffly. “Your job is to protect the kingdom.”

“Isn’t the princess part of the kingdom?” San pointed out.

“Well, yes… But, still. I don’t see why you need to go.”

“Your highness, your daughter is a beautiful you lady, and if you send her to this ball all alone, lord knows what’ll happen to her,” San started, hoping that scaring the king would work as a tactic since you were counting on him, after all.

“The prince will be there! She’ll be fine.”

“Yes, but what about to and from the ball? The prince won’t be able to pick her up or drop her off, and I don’t know about you, but I wouldn’t trust the other kingdom to protect her just yet.”

“Oh my… You’re right. Okay, I’m entrusting you with her, then. I want you to get her there and back safely, San.”

“Yes, your highness.”

With a wave of his hand, the king dismissed San. He returned to the Great Hall where you were standing and tapping your foot nervously while anxiously biting your nails. You looked at him with expectant eyes, and he responded to you with a quick nod. Relief washed over your body, and a smile bloomed on your face. San turned around and made his way back to his quarters in a hurry as your smile made his heart nearly swoon.

San’s heart did swoon when he saw your full outfit for the ball. You had a beautiful royal purple strapless lace ballgown on, rhinestones decorating your bust, waist, and hips. You smoothed out the dress and looked down at it before looking at San and asking quietly, “Do I look alright?”

“Princess, you look so beautiful,” San said with a tiny gasp. “You’re going to be the most beautiful woman at this ball.”

You smiled shyly at the man. You knew that he was just telling you that because you were the princess, but it was still nice to hear him say that. San held his hand out for you and assisted you as you got into the carriage before sitting alongside you.

The steady clicking of the horses hooves droned on in the background as the carriage made its way along the dirt path. The clicking was so steady, in fact, that it lulled you to sleep, your eyes growing heavier with each passing second. It was only when you fully fell asleep did you rest your head on the knight’s shoulder, slightly startling the man.

San couldn’t help but observe your features. You were so beautiful when awake, so he didn’t expect you to be such a graceful sleeper as well. Your long eyelashes were so perfectly curved that it took everything in the knight to not run a finger along them, and the way your rosy lips were slightly parted as you breathed softly drove him insane. Rather than squish you— you know, as one does with cute things— San settled for brushing your hair out of your face and kissing your forehead, only to immediately freeze.

Oh shit.

That was out of bounds. He should not have done that— he was merely a knight and you were the princess! How dare he make a move on your sleeping being? Shame consumed San’s body as he recoiled, his shoulder moving slightly, making your head nearly slip from your comfortable pillow. You let out a little whine and pushed yourself closer to San, threatening the man’s heart. He froze yet again and held his breath, wondering if you were awake for that moment when he kissed your forehead, but you weren’t. You were fast asleep.

At least you were asleep, San had to keep telling himself as the long journey to the other kingdom persisted. At least you were asleep.

“Okay, just stay right by my side, San,” you instructed San as soon as you got out of the carriage.

Thanks to your amazing nap in the carriage, you were on full, high alert from the moment you arrived in the other kingdom. You linked arms with San and let him escort you into the palace where the ball was completely underway. You only clung closer to the knight as you made your way through the halls and into the Grand Hall where dozens of princes and princesses were talking, drinking, laughing, and dancing.

“What’s the plan, princess?” San asked you in a hushed voice as the two of you stepped through the threshold.

“We need to find the prince—”

“Princess Y/N! I was beginning to wonder when you would arrive!” a voice said cheerily from behind you.

Startled, you jerked away from San and turned around to face the prince you were to wed, your heart pounding like crazy as you realized that you would have to lie to the prince well before you had time to prepare yourself.

“P-prince Yeosang!” you exclaimed while nearly biting your tongue.

“Oh, and I see you’ve brought a guest,” Yeosang’s voice flattened almost immediately upon seeing the knight by your side.

Sensing your fear, San reached for your hand and held it, his fingers lacing with yours. You would think that the action would calm you down, but it only made you more flustered. Mustering up the courage within you, you cleared your throat and said, “Yeah. Actually, I need to tell you something.”

Before you could continue, Yeosang held his hand up. He didn’t need to hear it since just seeing your hand in San’s was enough to explain the situation. “Does your father know?” Yeosang asked icily.

“Yes,” you lied straight through your teeth.

“Interesting… Alright, well, enjoy the ball. I’ll see you around some time, princess.”

With that, Yeosang returned to his guests at the ball, his arm immediately wrapping around the waist of another princess. You let out a huge sigh of relief and turned to look at the knight, your eyes sparkling brilliantly as you made eye contact.

“Thank you, San!” you whispered but cheered at the same time.

Rather than wait for a response from him, you threw your arms around him and hugged him to show your appreciation. San was completely taken aback, but after a few seconds, he accepted the hug, his own arms wrapping around your body. He could faintly smell the fragrance you had used earlier that day, and he so badly wanted to bury his nose in your hair and enjoy the smell properly, but he refrained.

Little did he know that you were in the same boat, but with him and his musk. San smelled so manly and so sexy, you felt like your insides were about to start a raging fire the longer you immersed yourself in his warmth and scent. Then, you realized you had been hugging the man for quite some time, so you let go and shuffled away slightly, a light blush appearing on your cheeks. Had you looked up, you would have seen that San’s face was extremely red, and you only looked up by the time it subdued.

“We, uh,” San cleared his throat and spoke softly. “We have some time to kill before we head back… What would you like to do, princess?”

“Well, I’m not going to say no to free food and drinks,” you murmured.

Letting out a light laugh, San nodded and said, “Of course. Right this way, your highness.”

Arm wrapped loosely around your waist, San accompanied you wherever you went. He made sure to stick close to you as the night progressed, one of his hands always on you at any given moment.

The two of you were standing and watching the couples waltz on the dance floor. San refused to drink— technically, he was on the job, so he had to remain sober— while you nursed your second drink of the night. You tore your eyes from the ballroom floor and looked at the attractive knight. You thought you were subtle, but he could feel your intense gaze on him as he continued to look at the dancers. Maybe you were drunk, he told himself the longer you stared. He thought you were drunk, but you definitely were not. What kind of princess would you be if you didn’t know how to control yourself and maintain your tolerance?

“San, you’re really attractive, you know that?” you murmured.

“Princess…”

You brought your hand to his face and traced your finger over his cheekbone, along his jaw, and on his lips. You stood the tiniest bit closer to him as you then placed a thumb on his lower lip and dragged it down slightly, your nail grazing the inside of his lip. San’s heart was racing faster than a horse, and his mind was slowly beginning to melt. You looked so fucking beautiful looking up at him with those doe eyes of yours, your slightly parted lips driving him insane once again. Before his mind could completely lose a grip on reality, San grabbed your wrist and moved your hand away from his face, your arm going limp and resting by your side.

“That’s highly inappropriate, princess,” San said roughly as he remembered his station.

“San, we need to look the part,” you insisted.

“We already showed the prince.”

“What about the castle staff?”

San blinked several times before leaning in and whispering into your ear, “You’re really playing with fire right now, princess.”

You turned your head, your lips so close to brushing past his, and whispered, “Would you rather dance with me instead, Knight San?”

Holding his breath, San moved away from you, trying desperately not to show how flustered he was by your actions. He gave you a tiny nod and held his hand out for you, your hand slipping into his perfectly. He led you to the dance floor and put his arm on your waist as you placed your hand on his shoulder.

You honestly didn’t expect San to be such a great dancer. He was a knight— his heavy armor and broad build should’ve made him super stiff. But no, he was fluid, graceful, light, and everything else a dancer is. He quite literally swept you off your feet the more you danced with him. You looked at his face as he whisked you side to side, around the other couples, and through the ballroom floor. Your heart was already fluttering the more you thought about his firm, rough hand on your waist, and it only got worse when his eyes met yours. In fact, your heart was beating so rapidly that you completely missed a step. You tripped over your own dress and nearly fell backwards, but San caught you in time, his arm wrapped securely around your waist.

When he pulled you up, he held you flush against his chest. Your eyes widened as you felt him hug you the slightest bit tighter.

“Are you okay?” San whispered.

“Y-yes… I think…. I need some air.”

Brushing past San, you went straight for the palace balcony, the cool breeze in the midnight sky snapping you out of your heart-fluttering trance. That only worked for about two seconds because your mind immediately drifted back to the way San was holding you when you nearly fell. You bit your lower lip and started pacing the balcony as you tried to calm yourself down, but the more you thought about it, the more heat pooled inside you. You felt like a goddamn animal in heat with the way you were thinking about Knight San, a man that you would never, not in your dizziest daydream, be allowed to wed, let alone sleep with.

“Princess?” you heard San call for you, his foot barely through the threshold.

You turned around to face him, and San immediately stopped breathing. You seemed to be turning in slow motion, your hair swaying with the wind, and your dress briefly flourishing before settling, giving you a more than majestic feel.

San approached you slowly at first, then quickly arrived by your side, one of his hands cupping your face while the other found your waist, and he kissed you deeply, passionately. He kissed you as if his life depended on it, like if the two of you weren’t connected, the entire palace would crumble to ashes.

“Yes, Knight San?”

It was only when you called his name did San realize that he was still standing right in front of the doorframe— he hadn’t moved an inch.

“W-we should leave soon, princess,” San managed out, his throat dry as he realized his deepest and darkest desire manifested itself into a dizzy daydream.

“Okay, let’s go.”’

The ride back from the ball was hellish. Both you and San were on edge the entire ride back— not that the two of you knew that the feelings between the two of you were mutual. You were staring out the window into nothingness as it was night time and the only things you could clearly see were the moon and the stars, and San was fixated on his balled up fists in his lap, trying to extinguish the fire burning within him.

It progressively got harder for both of you when the carriage arrived at your kingdom. San got down first, and he held his hand out for you to assist you out of the carriage. But, when your skin made contact with his, you felt like your hand was on fire— he felt the exact same way. You both shared intense eye contact that said way more than either of you were willing to relinquish, the tension in the air and in your chest palpable.

“G-good night, San,” you whispered, your heart clenching at the thought of parting with the man.

“Good night, princess,” San returned in the same register, the glimmer in his eyes fading slightly.

With that, the two of you retreated back to your respective rooms, and the second you entered the castle, thunder broke out, and it started raining heavily. You jumped upon hearing the boom, the sound nearly shaking the castle. Oh, how you hated rainstorms. Rain itself was fine, but thunder and lighting? Nuh uh. You had no idea how you were going to get yourself to sleep that night.

San, stripped down to his simple cotton clothing, laid awake in his bed not because of the storm, but because of you. He rested one of his arms across his stomach to try and release the tension building up in his nethers, his other one over his forehead trying to ease his mind. Yet, he couldn’t, because his mind kept flashing to you in your dress, making his pants tighter with every memory.

Luckily for him, it was when someone suddenly knocked on the door was he able to fully calm down. He quickly made his way to the door, and upon opening the door, there was another loud boom of thunder, making the person on the other side of the door jump into his arms— making you jump into his arms.

“P-p-princess!” San exclaimed in a hushed but surprised voice. “What’re you doing here?! You’re not supposed to be here!”

“I’m s-sorry, San. I just couldn’t sl-EEP—”

There was another clap of thunder, scaring you further into his arms. You buried your face in his chest and clung to his shoulders, using him as some sort of safety shield.

San didn’t know what to think of the situation. He knew that whatever the fuck was going on was way out of bounds for someone in his station. He knew that, but in the same breath, he didn’t want to let you go. He loved the way you fit perfectly into his embrace, the way your elegant nightgown swayed when you jumped further into his arms, your trembling arms and legs begging for someone to keep you safe, so on and so forth. Dare he say it, he was in love with you, but he definitely did not dare.

Hugging you securely, San completely closed and locked the door to his room before walking you to his bed and sitting you down alongside him. “Princess, don’t be scared,” he whispered as he pulled himself away from you and brushed your hair behind your ear.

Nodding, you willingly let go of him and placed your hands flat in your lap, your fingers still slightly trembling with fear. “Sorry, I just…” you started with a heavy sigh. “I couldn’t sleep because of the rain and… And because of other things…”

“What other things?” the knight inquired.

“…I meant what I said earlier, you know.”’

San didn’t have to ask about what you were referring to. He knew exactly what you were trying to say, and while he really wanted to accept your interest in him, he couldn’t. He shouldn’t. It was not proper of him to do so, and it would never be proper of him to do so.

You knew this as well, which is why you scooted closer to San and reached for his hand. Silently, with your eyes, you told him to not resist it and just let you touch him, hold his hand, lace your fingers with his.

“Princess, you know that this isn’t right,” San tried to fight his feelings and let reasoning win, but when you rubbed circles on the back of his hand with your thumb, he felt his feelings override logic and reasoning.

“I know,” you said with a sad whisper. “But, I… I don’t want to be with anyone else. I really like you. You’re sweet, considerate, loyal, handsome, and honest, and I don’t know if there are any other princes in this entire world that share your same qualities. You’re… Perfect.”

“Princess, I’m not perfect. You’re perfect,” San reversed your compliment and unlaced his fingers with yours to cup your face. “You’re the most perfect being, and I truly would do anything to be with you—”

“Then do it.”

“W-what?”

“Be with me. Kiss me,” you leaned into him, your hand pressing into his thigh as you neared him. “Sleep with me.”

“…Are you sure?”

“Yes.”

Tentatively, San brought your face to his, his thumb rubbing against your ear as he kissed you softly. His hot touch on your cheek and ear only got hotter as his kisses deepened, his lips trapping yours over and over and over again. You held onto his shoulders as he brought you onto his lap, your ass rubbing against his slowly stiffening, shielded cock. He sighed blissfully in between kisses, little grunts and gasps leaving his lungs when you shifted against him just right.

And yet, while he kissed you so passionately, he was still so reserved. His tongue remained in his mouth, non-intrusive, dormant.

“San,” you breathed out as you pushed against him gently, trying to get him to listen to you. “Just let yourself go. Don’t be the self-restrained knight my father conditioned you to be. Be insatiable tonight.”

“I’m warning you— you won’t get a wink of sleep tonight then, princess,” San whispered back, his voice so low it could’ve turned into a growl.

“I’d rather you kept me up instead of the storm.”

With your blessing, San swiftly moved you so that you were laying on the bed while he hovered above you. He leaned down and kissed you once more, but this time, he did let go. His tongue pushed its way into your mouth and swirled with yours, and his hands grabbed the bottom of your nightgown and lifted it upwards, revealing the fact that you had nothing on underneath.

“You sleep without undergarments, princess?” San broke the kiss to ask you his question in shock.

“San, don’t call me princess… Call me by my name,” you told him, completely sidestepping his remark about your sleep habits.

With that sensual, low rumble of his, San uttered your name, and instantly, goosebumps covered your entire body. He sounded so incredibly sexy when he said your name like that, and it just made you want to latch onto him and never let go.

“Y/N, may I?” San asked as he slowly lowered himself, bringing his lips closer to the searing heat between your legs, his large hands gripping your thighs gently.

Hearing him asking for permission so politely while saying your name sent butterflies storming through your insides.

“May I?” San asked again, still waiting upon your response.

“Please.”

The second his tongue made contact with your folds, your fingers and toes curled into the sheets, a long pleasureful sigh leaving your lips. Your back arched as you felt his tongue press and prod into you, his hold on your thighs tightening the more he immersed himself in your wet cunt.

“Oh San… Oh! Mmm,” you did your best to keep your moans to a minimum, but the longer he spent down there, the tighter the knot in your belly became and the harder it became to suppress your noises.

You barely lasted the second San’s tongue circled around your clit and his finger entered and curled inside you. Your entire body shuddered, and you let out a little cry as you felt the tension within you snap.

“San,” you whimpered as you felt the pleasure gradually die down. “I want more…”

“As you wish,” San responded, a slight smirk on his face, turning you on all over again.

San pulled off your nightgown altogether before he slowly started undressing himself, giving you a little show as he did so. The rain was still coming down hard, and there was thunder and lightning in the distance, but you were so entranced by San that you forgot everything. However, you went from being enamored back to being fearful when he revealed the massive weapon he had been hiding under all of the armor, all of the layers. Of course, he was fully erect, so it couldn’t get any bigger than that, but it still made fear course through your veins.

“I’ll start slowly for you, and only when you feel comfortable will I go faster,” San murmured to you as he trapped your body between his arms and knees, easing a little bit of your fear.

His cock head rubbed against your sensitive clit, making you grip the sheets behind your head. Your clit was still throbbing and recovering from your orgasm just moments prior, so when you felt him rub against you like that, the pleasure just soared through you to the point that you came again, the walls of your cunt convulsing, your knees shaking.

“Alright,” you detected a hint of a chuckle behind San’s words. “I’m going to start.”

“H-hurry, San…” you whimpered, your voice trembling.

You knew San was going to be huge, and that it was going to be a tight fit, but knowing wasn’t enough. It felt like his cock was tearing you apart. You bit back a loud scream and reached for San’s arms, your nails clawing into his forearms. He was nearly balls deep inside you by the time he stopped moving, his waist pressed firmly against yours.

“You’re doing so well for me, Y/N,” San validated you with the softest yet sexiest voice you had ever heard. He leaned down and smoothed your hair back before leaving a light kiss on your lips. “So well.”

“San— Ngh!”

Your breathy moan turned into a little cry when San started moving again, his cock pulling out just as slowly as when he pushed it into you. Little dots of perspiration decorated his forehead and started rolling down the sides of his face as his gyrations started to speed up and became more and more intentional. You had to settle for biting your lower lip when San leaned back, thrusting faster and harder. His hands reached for your breasts, and he massaged them, rolling your hardening nipples in between his fingers, evoking the most erotic groans out of you.

“You’re making such lewd noises, Y/N.” San licked then bit his lower lip, his eyebrow raising slightly the more he listened to your melodic moans. “You like it that much?”

“Mmhmm— More— Ah! M-more,” you barely instructed.

The wood of the bed frame creaked as his fast, hard thrusts shifted the whole bed. His eyebrows were knitted together the more he focused on pleasuring you, sweat drops falling from his face and decorating your bare skin and the sheets below. He long foregone toying with your breasts and bent himself over you again, his body practically rolling into yours. His lips kept teasing you, brushing against yours but never fully kissing you, but when he brought them to your neck, his lips would press against your skin before biting lightly, playfully.

Then, he shifted up ever so slightly, his cock starting to rub against your G-spot and hit your cervix in every stroke. Sparks filled your vision as he kept going at the two spots over and over again. You reached for his shoulders and dug your nails into his skin harshly as you cried loudly, the rainstorm drowning out your screams.

San, feelings the walls convulse and tighten around his thick cock, felt pleasure surge through his system as well. He pulled out, but before he could cum, you shook your head and tugged his shoulders, bringing him down so his ear met your lips.

“Inside. Please.”

Shuddering, San quickly re-entered you and did as you requested, his hot load spurting into you uncontrollably. San let out the most toe-curling, pussy-clenching groan, making you thirst for the man once more. It certainly did not help when you felt his cum spill out of you when he pulled out.

When San looked down to see your red, quivering pussy dripping with his cum and your arousal fluid, he gulped and did his best to suppress his perverted desire to keep filling you up with his lineage. That lasted only several seconds because when you outstretched your arms and willed him to embrace you, you also kissed him with enough intensity to make him want to fuck you hard all over again.

“Be the reason I don’t sleep tonight, San.”

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